public void GetCustomerByQueryStringTests()
{
var normalFilePath = Path.GetFullPath("./TestData/SampleData.csv");
var customerDataService = new CustomerDataService(normalFilePath);
var result = customerDataService.GetCustomerByQueryString(string.Empty, 1, 50, out var total).Count;
Assert.True(result > 30);
Assert.True(total >= result);
var searchStr = "rtabar@hotmail";
result = customerDataService.GetCustomerByQueryString(searchStr, 1, 50, out total).Count;
Assert.True(result == 1);
Assert.True(total == 1);
}